Mechanical gearing.



No. 687,!46. Patented Nuv. l9, I90l.

L. S. FLECKENSTEIN.

MECHANICAL GEARING.

(Application filed July 12, 1901.)

(N 0 Model.)

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MjEU w? IN VE N T0 NI jaded/2i. B)

' UNITED STATES PATENT OFFICE.

LEONARD s. FLEoKENs'rEIN, OF EASTON, MARYLAND.

MECHANICAL GEARING.

SPECIFICATION forming part of Letters Patent No. 687,146, dated November19, 1901. Application filed July 12, 1901. Serial No. 68,005. (Nomodel.)

To all whom it may concern.-

Be it known that I, LEONARD S. FLEOKEN- STEIN, of Easton, in the countyof Talbot and State of Maryland, have invented a new and ImprovedMechanical Gearing, of which the following is a specification.

The object of my invention is to provide a simple and inexpensive butefiective substitute for cog, friction, or belt gearing ordinarilyemployed heretofore for operating'machinery in which some parts have acontinuous rotation and others require to have an intermittent rotation.

The invention is embodied in the construction and arrangement of partshereinafter described.

In the accompanying drawings, Figure 1 is a sectional view of anapparatus embodying my invention, the line of section being indicated by1 1 on Fig. 2. Fig. 2 is a plan view. of the apparatus. Fig. 3 is atransverse section on line 3 3 of Fig. 2. Fig. 4 is aplan view of adouble chaindink forming a part of my invention.

As shown in Fig. 2, the sprocket-chain is practically double, it beingformed of two like chainsA and A, arranged parallel and spaced apart andconnected by cross-links B, arranged at intervals in its length. Thechains A A are preferably of the usual construction, being formed oflinks which are detachable by a sliding lateral movement. They areconnected at intervals by the triple link B. (See Fig. 4.) The same isconstructed of two parallel lengthwise bars a and parallel transverse orcross-bars b, that are spaced equidistantly. The length of the link Bwill correspond to the distance at which the individual chains A and Aare to be spaced from each other. The link B has the same engaging hookscats the ordinary or single links.of chains A A and maybe similarlyconnected with and disconnected from said chains, of which it forms anoperative part. It is apparent that since the link B spans the spacebetween the chains A A the middle portion of its lengthwise bars mayengage and rotate a sprocket-wheel arranged as shown in Figs. 1 and 2.Thus the compound or double sprocket-chain A A is applied to and runs ontwo pairs of sprocket-wheels C O, keyed 011 shaftsD D, respectively, and

under central wheels E, mounted loose on a shaft F. The several shaftsare parallel. It is apparent the wheels 0, O, and E must be spaced apartcorrespondingly to the chains A A. Thus shafts D D and wheels 0 O E arecontinuously rotated. If now a-wheel G be arranged and keyed on shaft Fbetween the wheels E, it is apparent it will be rotated intermittentlyby engagement at intervals with links B. In other words, the wheel G andshaft F will be rotated when ever the teeth of said wheel are struck bythe central portion of the triple link B, which spans the space betweenthe chains A A.

Thus by arranging such links B at selected intervals in the double chainany desired number of partial rotations of the wheel G and shaft F maybe effected during one complete traverse or revolution of the doublechain. As shown, three such links are placed in and connect the chains AA.

It is apparent that by arranging another sprocket-wheel G exterior towheels 0 and on a shaft F, placed adjacent and parallel to shaft D, thesame will be rotated intermittently, like the wheel G.

By the above-described construction of sprocket-chain and arrangement ofsprocket- Wheels continuous and intermittent rotation of shafting may beobtained in the most economical manner.

While I have described and illustrated sprocket-chains and wheelsproper, it is manifestly within the scope of my invention to employbelts or wire-ropes or other media arranged parallel and connected bycross pins or bars and arranged to run on wheels or pulleys suitablyconstructed for engagement with the ropes.

What I claim is- 1. The combination, with two parallel end shafts, andtwo sprocket-wheels fixed on each of said shafts and'spaced apart asspecified, of two endless chains, spaced apart corresponding to saidwheels, triple links B, connecting the chains at intervals in theirlength, a third shaft arranged parallel to the others, and asprocket-Wheel mounted on such third shaft and arranged for engagementwith the central portions of the triple links, whereby it is rotatedintermittently, as shown and dearranged between the loose wheels, and ascribed. double or two-part chain having triple con 2. The combinationwith two parallel end meeting links, as shown and described. shafts andtwo pairs of sprocket-wheels there- LEONARD S. FLECKENSTEIN. 5 on,ofaninterinediate shaft and two sproeket- \Vitnesses:

wheels mounted loose there0n,and a sproeket- W. S. WILSON,

wheel keyed on the intermediate shaft and CHAS. E. NICOLS.

